Mercurial > pub > dyncall > dyncall
view dyncallback/dyncall_callback_x64.c @ 533:71c884e610f0
- integration of patches from Raphael Luba, Thekla, Inc.:
* integration of aggregate-by-value (struct, union) support patch for x64 (win and sysv)
* windows/x64 asm additions to specify how stack unwinds (help for debuggers, exception handling, etc.)
* see Changelog for details
- new calling convention modes for thiscalls (platform agnostic, was specific before)
* new signature character for platform agnostic thiscalls ('*' / DC_SIGCHAR_CC_THISCALL)
- dcCallF(), dcVCallF(), dcArgF() and dcVArgF():
* added support for aggregates-by-value (wasn't part of patch)
* change that those functions don't implicitly call dcReset() anymore, which was unflexible (breaking change)
- added macros to feature test implementation for aggregate-by-value and syscall support
- changed libdyncall_s.lib and libdyncallback_s.lib order in callback test makefiles, as some toolchains are picky about order
- doc:
* man page updates to describe aggregate interface
* manual overview changes to highlight platforms with aggregate-by-value support
- test/plain: replaced tests w/ old/stale sctruct interface with new aggregate one
author | Tassilo Philipp |
---|---|
date | Thu, 21 Apr 2022 13:35:47 +0200 |
parents | f5577f6bf97a |
children | ba70fb631bea |
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/* Package: dyncall Library: dyncallback File: dyncallback/dyncall_callback_x64.c Description: Callback - Implementation for x64 License: Copyright (c) 2007-2022 Daniel Adler <dadler@uni-goettingen.de>, Tassilo Philipp <tphilipp@potion-studios.com> Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "dyncall_callback.h" #include "dyncall_alloc_wx.h" #include "dyncall_aggregate.h" #include "dyncall_thunk.h" /* Callback symbol. */ extern void dcCallback_x64_sysv(); extern void dcCallback_x64_win64(); struct DCCallback { DCThunk thunk; /* offset 0, size 24 */ DCCallbackHandler* handler; /* offset 24 */ void* userdata; /* offset 32 */ DCint aggr_return_register; /* offset 40 */ DCint pad; /* offset 44 */ DCaggr *const * aggrs; /* offset 48 */ }; void dcbInitCallback2(DCCallback* pcb, const DCsigchar* signature, DCCallbackHandler* handler, void* userdata, DCaggr *const * aggrs) { const DCsigchar *ch = signature; DCint num_aggrs = 0; pcb->handler = handler; pcb->userdata = userdata; pcb->aggrs = NULL; pcb->aggr_return_register = -2; /* default, = no aggr as ret value */ while(*ch) num_aggrs += (*(ch++) == DC_SIGCHAR_AGGREGATE); if(num_aggrs) { pcb->aggrs = aggrs; if (ch != signature && *(ch - 1) == DC_SIGCHAR_AGGREGATE) { const DCaggr *ag = pcb->aggrs[num_aggrs - 1]; #if defined(DC_UNIX) if (!ag || (ag->sysv_classes[0] == SYSVC_MEMORY)) { #else if (!ag || ag->size > 8) { #endif /* we need to "return" this aggr as a hidden pointer (first arg) */ pcb->aggr_return_register = 0; } else { pcb->aggr_return_register = -1; /* small aggr, returned in register */ } } } } DCCallback* dcbNewCallback2(const DCsigchar* signature, DCCallbackHandler* handler, void* userdata, DCaggr *const * aggrs) { int err; DCCallback* pcb; err = dcAllocWX(sizeof(DCCallback), (void**) &pcb); if(err) return NULL; dcbInitCallback2(pcb, signature, handler, userdata, aggrs); #if defined (DC__OS_Win64) dcbInitThunk(&pcb->thunk, dcCallback_x64_win64); #else dcbInitThunk(&pcb->thunk, dcCallback_x64_sysv); #endif err = dcInitExecWX(pcb, sizeof(DCCallback)); if(err) { dcFreeWX(pcb, sizeof(DCCallback)); return NULL; } return pcb; }